That's sort of my point in that the "disruptive" products that really move the needle in terms of expectations seem to be produced as proprietary products first.
This means they get hype and first mover advantage which in turn means they get a chance to tie up the best deals for content etc and get lock-in.
Things often work out that way, but there are exceptions. For example Firefox raised expectations of what a good browser can be like. But then I guess you could argue that Firefox has enjoyed large contributions from Google and thus isn't a true community project either. So I'm not really sure where to draw the line.
However I don't want to sound argumentative as you do make a valid point there. It just wasn't clear from your earlier iPhone comparison that you were talking about disruptive products specifically (or perhaps I misread your post to mean that community-lead smart phones could never exist?). Either way, I think we essentially agree here :)
This means they get hype and first mover advantage which in turn means they get a chance to tie up the best deals for content etc and get lock-in.